<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>选择器</title>
</head>
<style type="text/css">
	*{
		font-family: "微软雅黑";
	}
	h6:hover{
		color: blue;
	}
	h1,h2,h3{
		color: #A349A4;
	}
	span{
		color: #3F48CC;
	}
	h1 span{
		color: #FFF200;
	}
	.nb{
		color: red;
	}
	#nx{
		color: #74CA29;
	}

</style>
<body>
	<h1>这是H1 <span>试试后代选择器</span></h1>
	<h2>这是H2</h2>
	<h3>这是H3</h3>
	<h4 class="nb">这是H4</h4>
	<h5 id="nx">这是H5</h5>
	<h6>这是H6</h6>
	<span>nice</span>
</body>
</html>



<div class=""></div>


<div id=""></div>